Abstract
Currently, expressways encourage the use of interchange design methods in the layout mode to improve the safety of expressway operation in order to relieve road transportation pressure and strengthen the prevention of traffic safety accidents. The advantages and characteristics of the interchange method are more obvious and have important application value when compared to other interchange methods. This paper mainly studies and analyzes on the safety design and major challenges of interchanges in order to ensure the safe application of interchange forms in expressways.
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